Penneo.SDK 6.0.0-alpha0

## [6.0.0] - 2023-03-14 ### Changed - **Please refer to the updated SDK documentation for details on how to migrate to the new version**. The updated usage example showcases the new async implementation, which may require code changes for existing users - Improved async handling by using await instead of `.Result` - Addressed issue #155 by doing proper async/await throughout the SDK - Updated usage examples to showcase the use of `await` with `PersistAsync()` and other methods. - All async methods now have an `Async` suffix i.e. `Persist()` has been renamed to `PersistAsync()` following C# naming convention - Changed the previous usage examples which relied on using `.Result` ### Fixed - Fixed #165 that prevented signature lines from being updated due to invalid properties in the mapping builder for updates ### Removed - Removed deprecated `limit` and `offset` query parameters. Use `perPage` and `page` instead - Removed obsolete `Documents.Options` and `Documents.OptionsJson` - use `Documents.Opts` instead